400304122 has 16 divisors (see below), whose sum is σ = 632492640. Its totient is φ = 189487728.

The previous prime is 400304077. The next prime is 400304129. The reversal of 400304122 is 221403004.

It is a junction number, because it is equal to n+sod(n) for n = 400304096 and 400304105.

It is not an unprimeable number, because it can be changed into a prime (400304129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74428 + ... + 79624.

It is an arithmetic number, because the mean of its divisors is an integer number (39530790).

Almost surely, 2^400304122 is an apocalyptic number.

400304122 is a deficient number, since it is larger than the sum of its proper divisors (232188518).

400304122 is a wasteful number, since it uses less digits than its factorization.

400304122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400304122 is about 20007.6016053899. The cubic root of 400304122 is about 736.9929849281.

Adding to 400304122 its reverse (221403004), we get a palindrome (621707126).

The spelling of 400304122 in words is "four hundred million, three hundred four thousand, one hundred twenty-two".